INDEX. 215 



PAGE 



Sea-water purified for drinking 184 



Semivitrification 29-33 



Sheet fabrics, &c 144-152 



Shot 49 



Silver, extraction from ores 54 



, chloride of, solubility 55 



, reduction 55, 57 



, cleaned 58 



Silvering 72-78 



glass, for ornament 28 



mirrors 74 



Sitepsics 14, 172-190 



Slags of furnaces for cement 36 



Soap 162 



, recovered 140 



Soda ash, manufacture of 98 



, bicarbonate of, tested 100 



Soils, from disintegration of rocks 195 



Soldering salt 69 



cast and bar iron 69 



Sooranjee 139 



Solution and filtration 92 



Speculum metal 64 



Sponge, bleached 130 



Starch 172 



Stannate of soda 132 



Stearic acid 158 



Stearin 100 



Steam blue 142 



cement 155 



Steel, content of carbon 42 



from cast-iron 44 



bar-iron , 45 



Stone, artificial 37 



Strychnin 119 



Succinic acid 122 



Sugar, testa for 173 



, refined 175 



filter 178, 170 



, fermented 180 



Sulphur and sulphuric acid ; 94 



Sulphuric acid and water, densities of 96 



— , new process for 97 



Sulphurous acid, crystallized 97 



Sulphantimoniate of sodium 116 



Tanning 145 



Tannin 146 



